Improvement in turn-tables



U20.) r WILLIAM si.' COULTER.A

Improvement in Turn-Tables.

K No'. 122 29. Patentednemzsnai.

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' the table works in section.

IlNITED STATES FFICE.

Pargniv'r IMPROVEMENT IN TURN-TABLES.

Specification forming part of Letters Patent No. 122,229, dated December 26, 1871.

To all whom it may concern:

Be it known that I, WILLIAM S. COULTER, of Ashley, in the county of Luzerne and State of Pennsylvania, have invented a new and useful Improvement in Turn-Tables, also applicablev to draw or revolving bridges, transfer tables, and other purposes and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had to the accompany `ing drawing forming a part of this specification,

and in Which- Figure l represents a plan of a turn-table constructed in accordance with my invention, the saine being shown in connection with the n'xed rails of atrack, and with the foundation on which Fig. l2 is a sectional side elevation ofthe same.

Similar letters of reference indicate corresponding parts in both gures.

Although applicable to draw or revolving bridges and other purposes, it will sufficehere to describe the invention as applied to turn-tables on. railroad s. Said invention relates to means for fastening the turntable or device when adjusted into position 'with aline of rails; and consists in a bar or bars arranged on the outside of each rail of the table, and made capable of adjustment, to release or hold the table required.

Referring to the accompanying drawing, A

' represents a turn-table of aline of railroad; B

B, its rails; and (l, the foundation or pit on or in 'which it Works, said table traveling, as by Wheels b b, on a circular track, c. D l) are the rails of a track, with which the rails B B of the table are required to connect and disconnect, and which is effected by the turning oi' the table, as usual.

To hold the table when its rails are in position wi th said track, and to release it as required, said table is litted, on the outside of its rails, at or near either end, with a locking-bar or bars, E, of which four are here shown-#that is, two at either end; but I do not restrict myself to any precise number. These bars are arranged to slide through chairs or vguides d d, in direction of the` length of the rails ofthe table, so as to project beyond or clear, according to the direction in which they A are moved, the ends ofthe'xed rails D D of the track. j Such adjustment may be effected by means of levers F attached to rock the shafts e, which carry toes f, that t in afree or loose 1nanner blocks g, attached to the sliding-bars, which bars, when shot forward, lock the table in position with the track, as represented at the right hand of Figs. l and 2, but which, when moved backward, release the table, as `represented at the left hand of ,said figures. The outer ends of these bars E are rounded or tapered off at their tops, so that if the end of the table that the engine is approaching be tilted up, the tread of the engines wheels will gradually ride onto and press on said bars, and force the table down to its proper level, thereby avoiding that .down blow and end thrust on the rails ot' the table, which so commonly happens, and is so injurious and apt to produceV breakage. Instead of the bars E having a sliding movement in direction of thel length of the tables rails, they may be pivoted to the table and be rocked, so that When'it is required to release the table the saine may be done by raising the bars above the fixed railsof the track by means of cams and levers, or other suitable mechanical devices, and said bars be lowered again when the rails of the table are in their proper line or position with the fixed rails of the* track.

WILLmM BUTHERLUs. (120) 

